I'm not surprised about this. There used to be a big one in a town near me, and whilst new stores were opening (H&M, River Island) New Look just disappeared. It was there one week, exactly a week later and it was closed and nobody seemed to be expecting it either.
This was about 5 years ago.
It's prices aren't massively cheaper than River Island anymore, but it's quality is no better than Primark so people aren't bothering to shop there.